Elgin Grade 73

Here's a nice example of Elgin's grade 73 pocketwatch. It's 18 size, 7 jewels, made about 1895.

This has the later Swiss style perpendicular escapement, in the right of this photo.

It has an extra wide cut out in the top plate, making the mainspring barrel easily accessible.

Also of interest are the plate screws. They are blued steel, except for one which is also fully recessed. The barrel bridge covers this screw so it doesn't show. The fact that it is unfinished tells me that all these screws are almost certainly original.

The secondary serial number stamps are prefixed with an inverted triangle with one dot. This is a shorthand for the first digits of the the complete number.